"What really makes the SteelSeries Shift keyboard unique is its ability to swap out keysets. On the right side of the keyboard is a lock which, when pulled up, allows the keys to be removed. After removing the keyset, we can see the rubber domes which are made of high quality silicone which SteelSeries claims will extend the life of the keys to about 15 million keystrokes. This also allows the keyboard to be cleaned easily with some canned air or a vacuum which I think is also a plus...."